After changing the ATF fuid of my velvet drive 71c (model 10-17-004) (which had probably never been changed) the transmission started slipping severely. I decided, it was time for a rebuild, so here goes the write-up:

Important things to remember:
This thread does not cover reduction ratios.
Stage the parts in order as you are pulling them out to remember how they go back in.
If you can, take pictures as you go in case you forget how/when a particular part came out.
Make sure to note position of pump housing (this is particular to your engine’s rotation direction.)
Read service manual and thread completely before starting